Video: Pearl Jam and Jay-Z Perform "99 Problems"

Over the Labor Day weekend, Pearl Jam co-headlined the first-ever Made in America Festival in Philadelphia. The festival is the brainchild of rapper Jay-Z, who put together a diverse lineup that also included Run DMC, Skrillex, Drake, Dirty Projectors, Gary Clark Jr. and more.

Pearl Jam are currently working on the follow-up to 2009's Backspacer.

Josh Hart is a former web producer and staff writer for Guitar World and Guitar Aficionado magazines (2010–2012). He has since pursued writing fiction under various pseudonyms while exploring the technical underpinnings of journalism, now serving as a senior software engineer for The Seattle Times.